Which statement is true about the carbon dioxide-oxygen cycle?

animals breathe in oxygen and release carbon dioxide which is used by plants

animals breathe in nitrogen and release oxygen which is used by plants

animals breathe in nitrogen and release carbon dioxide which is used by plants

animals breathe in carbon dioxide and release oxygen which is used by plants

The class decided to have a terrarium. The teacher says it is important to include both plants and animals. Why is it necessary to include both plants and animals?

plants provide oxygen for animals and the animals provide carbon dioxide for the plants

plants provide food for the animals and animals provide water for the plants

plants provide water for the animals and animals provide food for the plants

plants provide carbon dioxide for the animals and animals provide oxygen for the plants

Step one represents what process?

Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.

Animals are releasing energy into the environment and storing carbon.

Animals are decomposing and releasing carbon into the soil.

Animals are converting carbon dioxide from the atmosphere to oxygen.

What doe the arrows represent in the carbon cycle diagram?

cellular respiration and decomposition

decomposition and photosynthesis

Step two represents what process?

Photosynthesis; plants take in carbon dioxide from the atmosphere

Animals are decomposing and releasing carbon into the soil.

Animals are converting carbon dioxide from the atmosphere to oxygen.

Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.

Step three represents what process?

Combustion; a factory burns fossil fuels (carbon) that transforms into carbon dioxide

Photosynthesis; plants take in carbon dioxide from the atmosphere

Animals are decomposing and releasing carbon into the soil.

Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.

Step four represents what process?

Animals are decomposing and releasing carbon into the soil.

Photosynthesis; plants take in carbon dioxide from the atmosphere

Combustion; a factory burns fossil fuels (carbon) that transforms into carbon dioxide

Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere.

The diagram shows the flow of carbon in a terrestrial ecosystem. Which will most likely happen if the decomposers are removed from the carbon cycle?

The amount of carbon dioxide in the atmosphere will decrease.

The amount of carbon dioxide in the atmosphere will increase.

The amount of carbon dioxide used by producers will increase.

The amount of carbon dioxide needed by consumers will decrease.

How is the carbon cycle similar to the water cycle?

Both involve the transfer of substances between animals, plants, and the Earth.

Both involve liquid substances falling to the Earth from the atmosphere?

Neither process works at low temperature.

Both involve the transfer of substances between the earth and outer space.

Which is a true statement?

Humans depend on oxygen, plants depend on carbon dioxide

Humans depend on carbon dioxide, plants depend on oxygen

Humans don't depend on plants for the air they need

The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?

X : Decomposition Y : Respiration

X : Adaptation Y : Decomposition

X : Fermentation Y : Nitrogen Fixation

How is combustion similar to cellular respiration?

It increases the amount of carbon dioxide in the environment.

It can occur only in living things.

It removes energy from the environment.

It needs glucose and oxygen to occur.

How does the concentration of carbon dioxide in the atmosphere affect climate?

As carbon dioxide concentrations increase, temperatures increase

As carbon dioxide concentration increase, temperatures decrease.

Carbon dioxide concentrations have no affect on climate

As carbon dioxide concentrations increase, temperatures become more random.

Steph and Sam were having a debate about the steps in the carbon cycle. Steph states that living organisms only release carbon dioxide. How can Sam use the diagram above and Law of Conservation of Mass to defend his position?

Since the Law of Conservation of Mass states that mass cannot be created or destroyed, this diagram shows the release of carbon dioxide, water, and heat energy into the atmosphere in step 1 and step 3.

Since the Law of Conservation of Mass states that mass cannot be created or destroyed, this diagram shows the absorption of oxygen in step 1 and step 3.

Since the Law of Conservation of Mass states that mass cannot be created or destroyed, this diagram shows the release of oxygen into the atmosphere in step 1 and step 3.

Since the Law of Conservation of Mass states that mass cannot be created or destroyed, this diagram shows the release of carbon dioxide and heat energy into the atmosphere in step 1 and step 3.

Which describes the relationship between plants and animals in the carbon cycle?

Plants produce and release oxygen that animals need

Plants produce and release carbon dioxide that animals need

Animals produce and release oxygen that plants need

Animals produce oxygen that plants turn into carbon dioxide

Which is a true statement?

Humans depend on oxygen, plants depend on carbon dioxide

Humans depend on carbon dioxide, plants depend on oxygen

Humans don't depend on plants for the air they need

Carbon Cycle

Authored by Alyssa Serena

Science

6th - 8th Grade

NGSS covered

Used 58+ times

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45 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

oxygen is a gas produced by _ and used by _

plants and animals

photosynthesis and carbon dioxide

animals and plants

carbon dioxide and photosynthesis

Tags

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of the carbon in existence is continually recycled in the carbon cycle

True

False

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following removes carbon from the atmosphere?

Combustion

Respiration

Photosynthesis

Death

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a decomposer?

Owl

Fish

Tree

Mushroom

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Organisms that do not decompose can be buried and become what?

water

nutrients

air

fossil fuels

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Burning fossil fuel has which effect in the carbon cycle?

It removes carbon dioxide from the atmosphere.

It puts carbon dioxide under the ground.

It adds carbon dioxide to the atmosphere.

It has no effect in the carbon cycle.

Tags

NGSS.MS-ESS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which process takes carbon dioxide out of the atmosphere?

respiration

combustion

decomposition

photosynthesis

Tags

NGSS.MS-LS1-6

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Carbon Cycle

oxygen is a gas produced by _ and used by _

All of the carbon in existence is continually recycled in the carbon cycle

Which of the following removes carbon from the atmosphere?

Which of the following is an example of a decomposer?

Organisms that do not decompose can be buried and become what?

Burning fossil fuel has which effect in the carbon cycle?

Which process takes carbon dioxide out of the atmosphere?

What is the an important element for living things.

Which statement is true about the carbon dioxide-oxygen cycle?

The class decided to have a terrarium. The teacher says it is important to include both plants and animals. Why is it necessary to include both plants and animals?

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